$BTC Bitcoin (BTC) is a digital currency based on blockchain technology. It is decentralized, meaning it is not controlled by any central authority like a government or bank. Launched in 2009 by an anonymous person or group known as Satoshi Nakamoto, Bitcoin uses cryptography to secure transactions. With a limited supply of 21 million coins, it is often referred to as “digital gold.” Bitcoin is used for online transactions, investment, and even accepted by some businesses. However, its price is highly volatile, making it a risky investment. Despite this, Bitcoin has revolutionized the world of finance and digital assets.